CN209946098U - Air quality detection equipment - Google Patents
Air quality detection equipment Download PDFInfo
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- CN209946098U CN209946098U CN201920110243.9U CN201920110243U CN209946098U CN 209946098 U CN209946098 U CN 209946098U CN 201920110243 U CN201920110243 U CN 201920110243U CN 209946098 U CN209946098 U CN 209946098U
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Abstract
The utility model belongs to the technical field of the air quality detects, concretely relates to air quality detection equipment, negative oxygen ion sensor and comprehensive testing portion in including the shell and locating the shell, the shell has the air wind channel one corresponding to negative oxygen ion sensor and the air wind channel two corresponding to comprehensive testing portion, air wind channel one does not coincide with air wind channel two. The utility model discloses an air quality detection equipment will carry out the independent design corresponding to negative oxygen ion sensor's air wind channel one and the air wind channel two corresponding to comprehensive testing portion, does not coincide each other promptly, has improved the detection precision of negative oxygen ion concentration.
Description
Technical Field
The utility model belongs to the technical field of the air quality detects, concretely relates to air quality detection equipment.
Background
In recent years, environmental issues have become a topic of focus in society. Air quality is a more of a daily concern to the general public. PM2.5/PM10 particulate matters generated by atmospheric pollution and toxic gases such as formaldehyde generated by plant construction and decoration cause harm to human health. Therefore, monitoring the air quality is a powerful means for treating air pollution and improving air environment.
Many studies have been made on air quality detecting devices, and for example, patent document CN206696255U discloses a portable air quality detector and patent document CN203705425U discloses a portable air quality detecting device. However, most of the existing air quality detection devices focus on detecting one or more of air quality parameters such as formaldehyde concentration, temperature, humidity, PM2.5 and the like in the air, and the detection of negative oxygen ions in the air is rarely involved.
It is known that negative oxygen ions are free electrons formed by the separation of the electrons in the molecules of air from the molecules of air under the action of excitation energy, and the negative ions of air have health-care effect on human body, mainly manifested by regulating the functions of nervous system and cerebral cortex, strengthening metabolism, promoting blood circulation, improving the functions of heart, lung, brain and other organs, etc. In ecological environment evaluation, the concentration of negative oxygen ions in the air is listed as an important index for measuring the quality of the air, but the negative oxygen ions in the air are colorless and odorless, invisible and invisible, and can only be detected by corresponding equipment. However, when the negative oxygen ion sensor and other air quality detection sensors share the same air duct, cross-effects are easily caused, and therefore, the negative oxygen ion concentration detection is inaccurate.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough that exists among the prior art, the utility model provides an air quality detection equipment.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
the utility model provides an air quality detection equipment, includes the shell and locates negative oxygen ion sensor and comprehensive testing portion in the shell, the shell has the air wind channel one corresponding to negative oxygen ion sensor and the air wind channel two corresponding to comprehensive testing portion, air wind channel one and air wind channel two are not coincident.
Preferably, the inlet and the outlet of the first air duct have a preset height difference and are respectively located at two sides of the housing.
Preferably, the inlet and the outlet of the second air duct are equal in height and are respectively located at two sides of the housing.
As a preferred scheme, the shell comprises a cylinder body with openings at two ends, a base is arranged at the bottom opening of the cylinder body, and a top cover is arranged at the top opening of the cylinder body; the top of the base is provided with an annular step, and the bottom opening of the barrel is abutted against the annular step.
Preferably, the cylinder body is provided with a lifting handle and a lifting groove.
Preferably, the integrated detection unit includes one or more of a carbon dioxide sensor, a carbon monoxide sensor, a PM2.5 sensor, a temperature sensor, a humidity sensor, a formaldehyde sensor, and a TVOC sensor.
As a preferred scheme, a master control MCU is also arranged in the shell and is in communication connection with all the sensors; and the shell is provided with a display screen in communication connection with the master control MCU, and the display screen is used for displaying the detection results of the sensors.
Preferably, the air quality detection device further comprises a wireless module, the wireless module is in communication connection with the main control MCU, and the wireless module is used for being in communication connection with a cloud server or a mobile terminal.
As a preferred scheme, the shell is further provided with an indicator lamp, the indicator lamp is in communication connection with the master control MCU, and the indicator lamp is used for indicating the air quality of the current environment.
As a preferred scheme, the main control MCU comprises a receiving module, a calculating module, a comparing module and a signal control module, wherein the receiving module is used for receiving the detection results of each sensor; the calculation module is used for matching the concentration of the pollutants detected by each sensor and the concentration of the negative oxygen ions with an air quality index calculation formula to obtain a current air quality index; the comparison module is used for comparing the current air quality index with a preset threshold range; if the current air quality index is lower than the minimum value of the preset threshold range, the signal control module is used for controlling the indicator lamp to display a first color; if the current air quality index is within the preset threshold range, the signal control module is used for controlling the indicator lamp to display a second color; and if the current air quality index is higher than the maximum value of the preset threshold range, the signal control module is used for controlling the indicator lamp to display a third color.
Compared with the prior art, the utility model, beneficial effect is:
the utility model discloses an air quality detection equipment will carry out the independent design corresponding to negative oxygen ion sensor's air wind channel one and the air wind channel two corresponding to comprehensive testing portion, does not coincide each other promptly, has improved the detection precision of negative oxygen ion concentration.
Drawings
Fig. 1 is a schematic structural diagram of an air quality detection device according to a first embodiment of the present invention;
fig. 2 is an exploded view of the air quality detecting apparatus according to the first embodiment of the present invention;
fig. 3 is a schematic block diagram of a main control MCU of the air quality detection apparatus according to the first embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air quality detection apparatus according to a second embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
The first embodiment is as follows:
as shown in fig. 1 and 2, the air quality detection device of the present embodiment includes a housing 1, a negative oxygen ion sensor 2 installed inside the housing 1, a comprehensive detection portion 3, a power supply 4, a main control MCU, a wireless module, a display screen 5 installed on the housing 1, and an indicator light, wherein the negative oxygen ion sensor 2 is used for detecting the concentration of negative oxygen ions in the air; the comprehensive detection part 3 is used for detecting other quality indexes in the air, and the comprehensive detection part 3 comprises one or more of air quality detection sensors such as a carbon dioxide sensor, a carbon monoxide sensor, a PM2.5 sensor, a temperature sensor, a humidity sensor, a formaldehyde sensor and a TVOC sensor; power 4 is used for supplying power to above-mentioned each components and parts, and master control MCU and all sensors, display screen 5, wireless module, pilot lamp communication connection, master control MCU are used for controlling the testing result of all sensors and show on the display screen, still are used for controlling the pilot lamp to show different colours with the quality of feedback current ambient air, for example: the indicator light displays red color, which represents that the current ambient air quality is poor; the indicating lamp displays yellow to indicate that the current ambient air quality is good; the indicating lamp displays green, which represents that the air quality of the current environment is excellent; the wireless module is used for being in communication connection with the cloud server or the mobile terminal so as to send the detection data of each sensor to the cloud server, and the detection data are transmitted to the user handheld terminal from the cloud server or are directly transmitted to the mobile terminal of the user, so that the user can remotely monitor the detection data. The wireless module can be a wireless communication module such as a WIFI module and a Bluetooth module.
Specifically, the housing 1 includes a barrel 11, a base 12 and a top cover 13, two ends of the barrel 11 are open, that is, the top and the bottom of the barrel 11 are open, the cross section of the barrel 11 is a square structure, and an arc transition is adopted at a corner of the square structure, so that the structure of the barrel 11 is smooth. The bottom opening of the barrel 11 is provided with a base 12, specifically, the top of the base 12 has an annular step 121, and the bottom opening of the barrel 11 is abutted on the annular step 121, so that the outer wall of the barrel 11 is flush with the outer wall of the base 12. The top opening of the cylinder 11 is provided with a top cover 13. Preferably, the base 12 may be designed with a weighted structure to improve the stability of the placement of the air quality detection device.
In negative oxygen ion sensor 2 slope was laid in shell 1, specifically, 3 horizontal installation of comprehensive testing portion on base 12, negative oxygen ion sensor 2's downside supports and leans on base 12, and negative oxygen ion sensor 2 supports and leans on the front side of comprehensive testing portion 3 for negative oxygen ion sensor 2 is in the tilt state, saves installation space, makes air quality check out test set miniaturized, portable.
The housing 1 has an air inlet a and an air outlet b, the air inlet a and the air outlet b are respectively located at two sides of the negative oxygen ion sensor in the inclination direction, so as to form an air duct I corresponding to the negative oxygen ion sensor, and the air inlet a and the air outlet b have a preset height difference. Specifically, the top cover 13 is of an annular structure, the display screen 5 is arranged above the annular opening of the top cover 13, and the display screen 5 is preferably an LED display screen; the top cover 13 is hermetically connected with the display screen 5, and an air inlet a is formed only on the rear side of the joint of the top cover 13 and the display screen 5, namely the air inlet a is positioned on the rear side of the top of the shell 1 and consists of a plurality of through holes; correspondingly, the front side of the bottom of the cylinder 11 is provided with an air outlet b, and the air outlet b is composed of a plurality of through holes. The positions of the vacancy inlet a and the air outlet b are designed, so that an air duct formed between the air inlet a and the air outlet b is distributed along the inclined direction of the negative oxygen ion sensor 2, and the detection precision of the negative oxygen ion sensor 2 is improved.
The shell 1 is also internally provided with a second air duct corresponding to the comprehensive detection part 3, and an inlet c and an outlet of the second air duct are respectively positioned at two sides of the shell and are equal in height, so that the comprehensive detection part 3 can be conveniently arranged flatly. Specifically, the inlet c of the air duct is positioned on the right side of the bottom of the cylinder 11, and the inlet c of the air duct is composed of a plurality of through holes; the outlet of the air duct is positioned on the left side of the bottom of the cylinder 11 and consists of a plurality of through holes; the air channel of the comprehensive detection part 3 and the air channel of the negative oxygen ion sensor are mutually independent, and the air quality detection precision is favorably improved. Wherein, the air outlet b, the inlet c of the air duct and the outlet are distributed along the circumferential direction of the cylinder 11 to form an annular structure, so that the whole structure is symmetrical and more attractive.
The indicator light of this embodiment is integrated in the structure of top cap, namely through the colour change of top cap, feeds back the good or bad of current ambient air quality.
In order to make the air quality detection device portable, the housing of this embodiment has a lifting portion, the lifting portion is a lifting groove 6, that is, the middle upper portions of the left and right sides of the cylinder 11 respectively have a mounting opening for lifting the lifting groove, the lifting groove 6 is mounted in the mounting opening, and the user only needs to hold the lifting groove 6 to carry the air quality detection device, which is very convenient. Preferably, one side of the cylinder body is provided with a lifting groove; in addition, the shell is also provided with a power supply connector 7, the power supply connector 7 is electrically connected with the power supply 4, so that the power supply 4 can be charged conveniently, and the power supply 4 can supply sufficient electric quantity; and the casing is also provided with a switch 8 of the wireless module, a detection switch 9 and a device switch 10 so as to control the wireless module to be turned on or off, detect the turning on or off and turn on or off the device.
Specifically, as shown in fig. 3, the main control MCU of this embodiment includes a receiving module, a calculating module, a comparing module and a signal control module, where the receiving module is configured to receive detection results of each sensor; the calculation module is used for matching the concentration of the pollutants detected by each sensor and the concentration of the negative oxygen ions with an air quality index calculation formula to obtain a current air quality index; the comparison module is used for comparing the current air quality index with a preset threshold range; if the current air quality index is lower than the minimum value of the preset threshold range, the signal control module is used for controlling the indicator lamp to display a first color, for example: green, representing the current air quality is excellent; if the current air quality index is within the preset threshold range, the signal control module is used for controlling the indicator lamp to display a second color, for example: yellow, representing current good air quality; if the current air quality index is higher than the maximum value of the preset threshold range, the signal control module is used for controlling the indicator lamp to display a third color, for example: red, representing the current poor air quality. Wherein, the air quality index calculation formula is as follows:
wherein AQI is air quality index, alpha is preset proportionality coefficient, c is concentration of negative oxygen ions in current environment, and c is air quality index0Is a preset negative oxygen ion concentration limit value,
it is required to satisfy the condition that the concentration of the negative oxygen ions in the air is increased along with the increase of the concentration of the negative oxygen ions in the air, i is the serial number of the pollutant,
λiis the contamination index, k, of the i-th contaminantiIs the weight coefficient of the i-th contaminant, ciIs the concentration of the i-th contaminant, siIs the limit value of the concentration of the i-th pollutant and n is the number of the types of pollutants. In addition, the main control MCU of this embodiment may further include a setting module, the setting module is connected to the calculating module, and the setting module is configured to set α and c0、si。
The alarm method of the air quality detection device comprises the following steps:
s1, acquiring the concentration of pollutants and the concentration of negative oxygen ions; specifically, the negative oxygen ion sensor, the carbon dioxide sensor, the carbon monoxide sensor, the PM2.5 sensor, the formaldehyde sensor, and the TVOC sensor in the air quality detection device of the present embodiment respectively obtain the concentration of the negative oxygen ions and the concentration of the pollutants corresponding to each of the negative oxygen ion sensor, the carbon dioxide sensor, the carbon monoxide sensor, the PM2.5 sensor, the formaldehyde sensor, and the TVOC sensor;
s2, matching the concentration of the pollutants and the concentration of the negative oxygen ions with an air quality index calculation formula to obtain a current air quality index; specifically, the calculation module of the main control MCU matches the air quality index calculation formula with the concentration of the pollutant and the concentration of the negative oxygen ions detected by each sensor to obtain a current air quality index AQI:
wherein alpha is a preset proportionCoefficient, c is the concentration of negative oxygen ions of the current environment, c0Is a preset negative oxygen ion concentration limit value,
it is required to satisfy the condition that the concentration of the negative oxygen ions in the air is increased along with the increase of the concentration of the negative oxygen ions in the air, i is the serial number of the pollutant,
λiis the contamination index, k, of the i-th contaminantiIs the weight coefficient of the i-th contaminant, ciIs the concentration of the i-th contaminant, siIs the limit value of the concentration of the i-th pollutant and n is the number of the types of pollutants.
S3, comparing the current Air Quality Index (AQI) with a preset threshold range, and if the current air quality index is lower than the minimum value of the preset threshold range, controlling an indicator lamp to display a first color by a signal control module; if the current air quality index is within the preset threshold range, the signal control module is used for controlling the indicator lamp to display a second color; and if the current air quality index is higher than the maximum value of the preset threshold range, the signal control module is used for controlling the indicator lamp to display a third color. Specifically, the comparison module of the main control MCU compares the current air quality index AQI with a preset threshold range, and if the current air quality index is lower than the minimum value of the preset threshold range, the signal control module is configured to control the indicator light to display a first color, for example: green, representing the current air quality is excellent; if the current air quality index is within the preset threshold range, the signal control module is used for controlling the indicator lamp to display a second color, for example: yellow, representing current good air quality; if the current air quality index is higher than the maximum value of the preset threshold range, the signal control module is used for controlling the indicator lamp to display a third color, for example: red, representing the current poor air quality. In addition, the air quality detection device of this embodiment can also send the current air quality index to the cloud server through wireless module in order to carry out statistical analysis to the air quality in a period of time, can also send the current air quality index to user terminal through wireless module to the user can learn the current air quality index long-rangely. The alarm method of the air quality detection equipment of the embodiment is simple and visual, and the quality of the current air quality is fed back through different colors displayed by the indicator lamp. And moreover, the optimization of negative oxygen ions in the air on the air quality is comprehensively considered, so that the feedback of the air quality is more accurate.
The air quality detection device of the embodiment independently designs the first air duct corresponding to the negative oxygen ion sensor and the second air duct corresponding to the comprehensive detection part, namely, the air ducts are not overlapped with each other, so that the detection precision of the concentration of the negative oxygen ions is improved. In addition, the air quality detection equipment of the embodiment comprehensively considers the optimization of negative oxygen ions in the air on the air quality, so that the feedback of the air quality index is more accurate.
Example two:
the air quality detection apparatus of the present embodiment is different from the first embodiment in that:
as shown in fig. 4, the lifting portion of the housing of the present embodiment is a lifting handle 100, specifically, the middle upper portions of the left and right sides of the cylinder body are respectively provided with a rotating shaft, two ends of the arched lifting handle 100 are respectively rotatably connected to the rotating shafts of the two sides of the cylinder body, and a user can carry the air quality detection device by only holding the handle with his hand, which is very convenient. The structure diversification of the air quality detection equipment is realized.
Other structures can refer to the first embodiment.
Example three:
the air quality detection apparatus of the present embodiment is different from the first embodiment in that:
the air quality detection device of the embodiment can omit the structure of the comprehensive detection part, is only used for detecting the concentration of negative oxygen ions in the air, and simplifies the structure of the air quality detection device so as to meet different requirements of users. In addition, one or more sensors included in the comprehensive detection part can be omitted so as to meet the requirements of different application occasions.
Other structures can refer to the first embodiment.
Example four:
the air quality detection apparatus of the present embodiment is different from the first embodiment in that:
the air quality detection equipment of the embodiment can omit one or more of a WIFI module, a display screen and an indicator light; when the display screen is omitted, the top cover is not an annular structure but a plate-shaped structure, and the air inlet can be arranged at the top of the cylinder body, can also be arranged at the junction of the top of the cylinder body and the top cover, and can also be arranged on the top cover. The structure of the air quality detection equipment is simplified, and the cost is reduced, so that different requirements of users are met.
Other structures can refer to the first embodiment.
Example five:
the air quality detection apparatus of the present embodiment is different from the first embodiment in that:
the pilot lamp of the air quality detection equipment of this embodiment can with not integrated with the top cap, can be equipped with the optional position at the casing outward, realize air quality detection equipment's structure diversification to satisfy user's different demands.
Other structures can refer to the first embodiment.
Example six:
the air quality detection apparatus of the present embodiment is different from the first embodiment in that:
the inlet of the first air duct of the air quality detection device of the embodiment can be designed at any height position of the cylinder, and can not coincide with the second air duct only by ensuring that the inlet and the outlet of the first air duct have certain height difference, and the cross influence between the negative oxygen ion sensor and the comprehensive detection part can also be prevented.
Other structures can refer to the first embodiment.
Example seven:
the air quality detection apparatus of the present embodiment is different from the first embodiment in that:
the negative oxygen ion sensor and the comprehensive detection part of the air quality detection equipment are horizontally arranged in the shell, and the ventilation holes are formed in the side walls of the shell, which are opposite to each other, so that a first air duct and a second air duct which are crossed are formed, and the cross influence between the negative oxygen ion sensor and the comprehensive detection part can be prevented.
Other structures can refer to the first embodiment.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.
Claims (10)
1. The utility model provides an air quality detection equipment, includes the shell and locates negative oxygen ion sensor and comprehensive testing portion in the shell, its characterized in that, the shell has the air wind channel one corresponding to negative oxygen ion sensor and the air wind channel two corresponding to comprehensive testing portion, air wind channel one and air wind channel two are not coincident.
2. The air quality detection device of claim 1, wherein the inlet and the outlet of the first air duct have a predetermined height difference and are respectively located at two sides of the housing.
3. The air quality detection device of claim 1, wherein the inlet and the outlet of the second air duct are equal in height and are respectively located at two sides of the housing.
4. The air quality detection device according to claim 1, wherein the housing comprises a cylinder body with openings at two ends, a base is arranged at the bottom opening of the cylinder body, and a top cover is arranged at the top opening of the cylinder body; the top of the base is provided with an annular step, and the bottom opening of the barrel is abutted against the annular step.
5. The air quality detection device of claim 4, wherein the barrel is provided with a lifting handle and a lifting groove.
6. The air quality detection apparatus according to any one of claims 1 to 5, wherein the integrated detection portion includes one or more of a carbon dioxide sensor, a carbon monoxide sensor, a PM2.5 sensor, a temperature sensor, a humidity sensor, a formaldehyde sensor, and a TVOC sensor.
7. The air quality detection device of claim 6, wherein a master control MCU is further arranged in the housing, and the master control MCU is in communication connection with all the sensors; and the shell is provided with a display screen in communication connection with the master control MCU, and the display screen is used for displaying the detection results of the sensors.
8. The air quality detection device according to claim 7, further comprising a wireless module, wherein the wireless module is in communication connection with the main control MCU, and the wireless module is used for being in communication connection with a cloud server or a mobile terminal.
9. The air quality detection device of claim 7, wherein an indicator light is further arranged on the housing, the indicator light is in communication connection with the main control MCU, and the indicator light is used for indicating the air quality of the current environment.
10. The air quality detection device according to claim 9, wherein the main control MCU comprises a receiving module, a calculating module, a comparing module and a signal control module, wherein the receiving module is configured to receive detection results of the sensors; the calculation module is used for matching the concentration of the pollutants detected by each sensor and the concentration of the negative oxygen ions with an air quality index calculation formula to obtain a current air quality index; the comparison module is used for comparing the current air quality index with a preset threshold range; if the current air quality index is lower than the minimum value of the preset threshold range, the signal control module is used for controlling the indicator lamp to display a first color; if the current air quality index is within the preset threshold range, the signal control module is used for controlling the indicator lamp to display a second color; and if the current air quality index is higher than the maximum value of the preset threshold range, the signal control module is used for controlling the indicator lamp to display a third color.
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|---|---|---|---|
| CN201920110243.9U CN209946098U (en) | 2019-01-23 | 2019-01-23 | Air quality detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920110243.9U CN209946098U (en) | 2019-01-23 | 2019-01-23 | Air quality detection equipment |
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| CN209946098U true CN209946098U (en) | 2020-01-14 |
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